Debt (Details) - USD ($)		1 Months Ended	12 Months Ended
	Jul. 15, 2020	Sep. 30, 2019	Aug. 31, 2020	Dec. 04, 2019	Aug. 31, 2019
Line of Credit Facility, Current Borrowing Capacity			$ 15,000,000
Line of Credit Facility, Remaining Borrowing Capacity				$ 10,000,000
Line of Credit Facility, Expiration Date			Jul. 05, 2021
Line of Credit Facility, Interest Rate Description			The amounts outstanding under this line of credit as of August 31, 2020 and August 31, 2019 are currently all under the default variable interest index rate of 3.5% and 4.75%, respectively.
Long-term Line of Credit			$ 5,100,000		$ 5,772,000
Debt Instrument, Maturity Date		May 15, 2027
Construction Loan			4,807,000		$ 342,000
Proceeds from Sale of Property, Plant, and Equipment		$ 7,075,000	$ 7,075,000
Minimum
Debt Instrument, Basis Spread on Variable Rate			3.50%
Line of Credit Facility, Maximum Borrowing Capacity			$ 15,000,000
Maximum
Line of Credit Facility, Maximum Borrowing Capacity			$ 10,000,000
Construction Loan Payable
Interest rate			4.35%		4.50%
Line of Credit Facility, Maximum Borrowing Capacity		$ 5,000,000
Term Loan
Fixed rate for conversion	4.60%
Debt discount (as a percent)	0.25%
Amount drawn and converted	$ 4,807,000
Community Bank
Long-term Line of Credit					$ 100,000
Letter of Credit
Notes Payable, Noncurrent					$ 100,000
Financial Guarantee
Long-term Debt			$ 0